Bulletin d’avalanche

South Coast

Feb 8 – 9, 2015Avalanche Canada
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Archivé · expiré 12 years ago

Danger d’avalanche

Tue
Wed
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
2 · Modéré
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Points saillants

While the storm is finally over, remain cautious, especially with your approach to terrain choices in the Alpine Monday.

Problèmes avalancheux

  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    2–6
    While warm temperatures should help the snowpack to settle and stabilize this week it's important to remain sceptical of alpine stability.  Upper elevations saw strong SW winds and as much as a meter of new snow which likely created very large slabs.

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    It doesn't look like there will be an overnight refreeze below 1500m for the foreseeable future.  While it's probably mostly slop below treeline, remain cautious of terrain traps where loose snow avalanches could be a concern.

Confidence

Fair

Weather Forecast

The Pineapple Express is finally done, unfortunately it looks like warm temperatures are here to stay. Monday: Freezing Level around 1600m, Strong SW winds in the alpine, light variable winds at lower elevations, 2 to 6mm of precipitation. On Tuesday alpine winds should remain moderate to strong, but they will likely switch to the W/NW. On Wednesday ridgetop winds are expected to increase to strong SW as freezing levels climb throughout the day, looks like they could go as high as 2200m. No precipitation expected.

Avalanche Summary

At the height of the storm in the northern portion of the region avalanches ran to size 3 on the February 1st Crust. Wet avalanches below 1950m were also observed. In the southern portion of the region several small glide avalanche releases were observed on rock slabs below treeline.

Snowpack Summary

The wet warm storm has produced 50 to as much as 80cm of snow above 2200m in the north of the region. The snow is wet below 2000m and saturated below treeline. Moderate to strong winds out of the SW through SE have likely formed deep slabs at upper elevations. In the Southern portion of the region it sounds like a bit of cooling produced 15 cm of new snow Friday night, previously rain had fallen to ridgetop. All the new snow rests on the early February rain crust. We have not received any reports of avalanches failing below this stout crust. Warm temps this week should help all the new storm snow to settle and stabilize.

Régions couvertes